LTC2632HTS8-LI12#TRMPBF

Overview

The LTC2632HTS8-LI12#TRMPBF is a dual 12-bit voltage-output digital-to-analog converter (DAC) from Analog Devices, housed in an 8-lead TSOT-23 package. It features an integrated precision reference providing a full-scale output of 2.5V with a temperature coefficient of 10ppm/°C. The device operates on a single supply voltage ranging from 2.7V to 5.5V and communicates via a 3-wire SPI/MICROWIRE compatible interface supporting clock rates up to 50MHz. It includes rail-to-rail output buffers, guaranteed monotonicity, and a power-on reset function that sets the output to mid-scale in internal reference mode upon initialization.

Feature Summary

• Dual 12-bit resolution with integrated 2.5V precision reference (10ppm/°C)
• Rail-to-rail output buffers with maximum INL error of ±1.5LSB
• 3-wire serial interface (SPI/MICROWIRE) with SCK frequencies up to 50MHz
• Power-on reset to mid-scale in internal reference mode

Applications

• Mobile communications systems
• Process control and industrial automation
• Automatic test equipment
• Portable battery-powered equipment

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates a 500-piece tape and reel packaging configuration as defined in the manufacturer's order information. Confirm that the HTS8 designation corresponds to the Automotive temperature grade (-40°C to 125°C) and TSOT-23 package type. Ensure compatibility with system voltage requirements, as this L-series variant supports a 2.7V to 5.5V supply range.

Selection Notes

Select the LTC2632HTS8-LI12#TRMPBF when a dual-channel DAC with high accuracy (±1.5LSB max INL) and low drift is required in a compact footprint. The 'H' grade provides an extended automotive temperature range compared to the commercial 'C' grade. The 'I' suffix configures the power-on reset to mid-scale, which is suitable for applications where downstream circuits must remain active during startup. Choose the external reference variant ('X') if a different full-scale voltage is needed.

Part Context

This component belongs to the LTC2632 family of dual voltage-output DACs. The part number structure defines key attributes: 'A' denotes the electrical grade with ±1.5LSB INL, 'H' indicates the automotive temperature range, 'TS8' specifies the 8-lead TSOT-23 package, 'L' sets the internal reference to 2.5V, 'I' selects mid-scale power-on reset, and '12' confirms 12-bit resolution. Other variants include 8-bit or 10-bit resolutions and different reset behaviors.

Replacement Considerations

Direct pin-compatible replacements within the same family include the LTC2632ACTS8-LI12#TRMPBF (Commercial grade, 0°C to 70°C) or the LTC2632HTS8-LZ12#TRMPBF (Automotive grade, Zero-scale reset). For applications requiring a higher full-scale voltage, the H-series variants such as LTC2632HTS8-HI12#TRMPBF provide a 4.096V output but require a minimum supply voltage of 4.5V.